---
product_id: 393439317
title: "316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047)"
brand: "seaworthy innovations"
price: "€ 1.95"
currency: EUR
in_stock: false
reviews_count: 8
url: https://www.desertcart.ie/products/393439317-316-stainless-steel-boat-scupper-assembly-with-hinged-stainless-flapper
store_origin: IE
region: Ireland
---

# 316 marine-grade stainless steel Includes 4 corrosion-resistant screws Silicone seal for superior water-tightness 316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047)

**Brand:** seaworthy innovations
**Price:** € 1.95
**Availability:** ❌ Out of Stock

## Summary

> ⚓ Elevate your boat’s defense with premium stainless steel precision!

## Quick Answers

- **What is this?** 316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047) by seaworthy innovations
- **How much does it cost?** € 1.95 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/393439317-316-stainless-steel-boat-scupper-assembly-with-hinged-stainless-flapper)

## Best For

- seaworthy innovations enthusiasts

## Why This Product

- Trusted seaworthy innovations brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sleek & Robust Design:** Upgraded stainless steel frame and flapper offer a modern, durable alternative to plastic and rubber, elevating your boat’s aesthetic and reliability.
- • **Marine-Grade Durability:** Crafted entirely from 316 stainless steel for unmatched rust resistance and longevity in harsh saltwater environments.
- • **Enhanced Sealing Technology:** Silicone seal and hinged stainless flapper deliver superior water-tight performance compared to traditional rubber flappers.
- • **Installation-Friendly Hardware:** Includes marine-grade screws optimized for hand-tool installation to prevent damage and maintain corrosion resistance.
- • **Precision Fit for Vertical Transoms:** Designed specifically for boats with nearly vertical transoms, ensuring a perfect, leak-proof installation.

## Overview

The 316 Stainless Steel Boat Scupper Assembly (P/N SW1047) is engineered for boats with nearly vertical transoms, featuring a fully 316 stainless steel construction—including frame, flapper, backplate, and screws—for superior corrosion resistance. Its hinged stainless flapper combined with a silicone seal ensures enhanced water-tightness and durability, outperforming traditional rubber flapper designs. The package includes four marine-grade screws designed for careful hand-tool installation to prevent damage and rust marks, making it a reliable, long-lasting upgrade for your vessel.

## Description

SW1047 is a direct replacement scupper for most boats that currently have the standard round plastic frame scupper with a rubber flapper. It has a 1.625” thru hole which is larger than the common plastic frame version which has a 1.375” thru hole. This means ours will fit over standard flared brass drain tubes (usually a 1.5” flare). The 1.625” thru hole and free swinging door also allows for quicker deck drainage. Notes: Transom mount only. Please see our recessed scupper for port or starboard mounting applications. Scuppers must be mounted above the waterline or paired with a drainage system that is above the waterline. Marine grade sealant (not included) may be required to seal the screw holes and backplate to the boat.

## Features

- SW1047 is intended for boats with nearly vertical transoms. Please utilize SW1143 if your transom has an angle over 6 degrees. SW1143 incorporates a wedge component so the scupper will rest in the closed position.
- The supplied screws are marine grade 316 stainless steel with excellent rust resistance. Stainless steel screws however may shear or break easier than non-marine srews. We highly recommend using hand tools for installation and drilling a pilot hole if needed for the screw holes. excessive force will also deposit iron from the hand tool which could result in superficial rust marks.
- Improved sealing compared to rubber flapper.
- Improved appearance and durability compared to plastic fame and rubber flapper version
- Please make sure the screw hole orientation is compatible with your application. (N,E,S,W vs NE,NW,SE,SW)
- 316 Stainless Steel Frame, Flapper, Backplate, and Screws (4x) with Silicone Seal.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Package Dimensions L x W x H | 7.05 x 4.65 x 0.71 inches |
| Package Weight | 0.23 Kilograms |
| Item Dimensions  LxWxH | 7 x 5 x 1 inches |
| Brand Name | SEAWORTHY INNOVATIONS |
| Manufacturer | Seaworthy Innovations |

## Images

![316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047) - Image 1](https://m.media-amazon.com/images/I/41i27fboecL.jpg)
![316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047) - Image 2](https://m.media-amazon.com/images/I/51rH+IsQ4LL.jpg)
![316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047) - Image 3](https://m.media-amazon.com/images/I/51ZUXgYrybL.jpg)
![316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047) - Image 4](https://m.media-amazon.com/images/I/51-HGX0yYOL.jpg)
![316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047) - Image 5](https://m.media-amazon.com/images/I/71YuLFYWaAL.jpg)

## Questions & Answers

**Q: Can you side mount these? My 1987 contender has rubber flappers like this but on sides of boat, not the transom.**
A: Hi Ashley,

This is intended for transom mount only.  We are launching another version in 2 weeks which is intended for Port and Starboard Mount.

Please contact us via our website and we can assist further.

Best,
Mike
Engineer Seaworthy Innovations

**Q: what is the OD ?  and bolt circle dim. ?**
A: Hello,

Dimensions are hidden in the 4th picture.  We will update the ad to add the dimensions in text as well.   3.12" OD with 2.31" circle pattern for screws.

Thank you!
Mike
Engineer Seaworthy Innovations

**Q: is there one or two in the package**
A: Hello,

These are sold individually.

**Q: Where would I buy silicone seal replacement for this product**
A: Hello,

Silicone is a very stable material in the marine environment unlike other rubbers that are used with traditional rubber flapper scuppers.  Our seal is also protected from UV light by the stainless steel door.  It is designed to last a very long time.

However, if replacement is ever needed, simply reach out to Seaworthy Innovations directly via our website.

Best,
Mike
Engineer 
Seaworthy Innovations

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well
*by C***L on March 12, 2022*

Looks good and serves its purpose

### ⭐⭐⭐⭐ Horrible hardware
*by R***N on December 10, 2023*

Scuppers themselves are very nice looking but the screws they come with are garbage. Had 2 from each batch break on me and had to go to the hardware store and buy all new screws to replace the broken ones. Also no retaining pin on the actual scupper that keeps it from falling out so it’s a 2 person job to install. Other than that they’re pretty decent so far.

### ⭐⭐⭐⭐⭐ Great product.Great product.
*by C***L on July 13, 2022*

I've had a Carolina skiff for 10 years. The original scupper plates never worked in the boat would take on water when sitting still such as for fishing. I tried several different scupper covers none of which work. Finally, I found the product that did work perfectly. This is a high quality product that works as advertised. I have on several boats and have never had a scupper cover work better. I highly recommend this product.

## Frequently Bought Together

- SEAWORTHY INNOVATIONS 316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047)
- 3M Marine Adhesive Sealant Fast Cure 5200 (05220) Permanent Bonding and Sealing for Boats and RVs Above and Below the Waterline Waterproof Repair, White, 3 fl oz Tube

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ie/products/393439317-316-stainless-steel-boat-scupper-assembly-with-hinged-stainless-flapper](https://www.desertcart.ie/products/393439317-316-stainless-steel-boat-scupper-assembly-with-hinged-stainless-flapper)

---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-20*